Tap to wake up?

Anyone managed to make Z1 tape to wake up option enable without rooting or flashing stock kernel?I did try some custom kernels but none are compatibile with latest firmware which cause some weird bugs and glitchs in GUI.This feautre has been out on few phone for a while,i can't believe that Z1 users still didn't get it....

I have a nexus 5 and had flashed Franco kernel, element x and other kernels with the ability to enable the double tap to wake feature on the device. Sadly the feature sucked my battery even with the latest Franco kernel. I am awaiting my sonyz2 that I bought because of the feature and the battery life I hope that the double tap doesn't cause the same problem...